Pope Pius XII Orders Bishops Not to Change the Sacred Ceremonies.
On June 2, 1957, Pope Pius XII extended Canon 1, paragraph 2of the Oriental Code ro rhw universal Church: Patriarchs, Archbishops and other Hierarchs (Ordinaries) should zealously care for the faithful protection and the accurate observance of their rite, nor are they to permit or tolerate any change in the rite. 
Michael Fighting
